CN114683042B

CN114683042B - Motor stator core laminating forming device and method

Info

Publication number: CN114683042B
Application number: CN202210620921.2A
Authority: CN
Inventors: 朱佳琪; 杨辉
Original assignee: Changzhou Association Issued Machinery Manufacturing Co ltd
Current assignee: Changzhou Association Issued Machinery Manufacturing Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-08-23
Anticipated expiration: 2042-06-02
Also published as: CN114683042A

Abstract

The invention discloses a motor stator core laminating and forming device and method, and belongs to the field of motor stator manufacturing. According to the invention, the tooth space plunger strips are utilized to preliminarily position the punching sheets and the upper and lower tooth pressing plates, the tooth space plunger strips are wedged with the tooth spaces by the lower wedge mechanism of the plunger strips and the upper wedge mechanism of the plunger strips, so that the position accuracy of the tooth spaces on each punching sheet is ensured, and simultaneously, the wedge positioning of the tooth spaces of the punching sheets, the tension centering and the pressing pressure maintaining of the inner walls of the punching sheets are sequentially completed in the process of downward pulling and moving of the central pull rod by utilizing the linkage action of the tension centering mechanism, so that the overlapping welding tool can be directly welded and fixed, the overlapping assembly steps and the multi-station circulation process of the motor stator are reduced, the overlapping welding operation of the motor stator is more convenient, and the manufacturing efficiency and the manufacturing accuracy are improved. In addition, the invention also innovatively adopts the linear cutting principle to realize the detection of the coaxiality of the motor stator core, does not need complex detection tools and detection equipment, and has simple and efficient detection operation and accurate and stable detection.

Description

Motor stator core laminating forming device and method

Technical Field

The invention relates to a motor stator laminating forming tool, in particular to a motor stator core laminating forming device and method.

Background

Fig. 1 and 2 are schematic structural diagrams of a conventional motor stator, which is formed by sequentially laminating a lower flange end plate a1, a lower tooth pressing plate a2, a punching sheet A3, an upper tooth pressing plate a4 and an upper flange end plate a5 from bottom to top, forming a stator core between a lower tooth pressing plate a2 and an upper tooth pressing plate a4 by a plurality of punching sheets A3, and welding and fixing the periphery of the punching sheet A3 by welding rib plates A6, wherein the upper end and the lower end of each welding rib plate A6 are respectively positioned with the flange end plate at the corresponding end by a positioning pin a7, and the lower flange end plate a1, the lower tooth pressing plate a2, the punching sheet A3, the upper tooth pressing plate a4 and the upper flange end plate a5 are respectively provided with tooth grooves A8 which are matched with each other.

In the manufacturing process of the motor stator, the coaxiality of the stamped steel A3 and the position accuracy of the tooth groove A8 need to be ensured, the lamination and welding are usually carried out on a lamination welding tool, and due to the fact that the stamped steel A3 is large in quantity, the lamination positioning difficulty is large, the product accuracy is poor, and the working performance of the motor is directly influenced in serious cases. At present, in order to ensure positioning accuracy, an existing laminating welding tool needs to use a plurality of positioning pieces, and is assembled and laminated through a plurality of processes, for example, in a patent application of "a welding device for a motor stator of a locomotive" disclosed in a chinese patent No. ZL202121271286.9 previously applied by an applicant, a manufacturing process of the laminating tool needs to use a plurality of steps, an upper positioning ring, a lower positioning ring and a punching piece positioning block need to be used for positioning a punching piece A3 in a laminating process, and a plug block is used for ensuring position accuracy of a tooth socket a8, and in order to facilitate lamination of the punching piece A3, a large gap is actually left between the plug block and the tooth socket a8, so that positioning accuracy of the tooth socket a8 is not high actually, and lamination positioning operation efficiency is not high. In the process of positioning the punching sheet A3 in the concentricity, the positioning is completed by using a mandrel with four core blocks arranged on the periphery, after all the punching sheets A3 are installed, the four core blocks are ejected out by screwing screws in the mandrel, the four core blocks are used for tensioning the punching sheet A3 to ensure the concentricity, each core block at least needs 2-3 tensioning screws, the operation flexibility is poor, and the efficiency is low. After the lamination of punching a3 is accomplished, need install hoist and mount behind the check lock pole and carry out pressure stack to the hydraulic press on to utilize the latch segment to insert the lockhole on check lock pole upper portion and carry out the pressurize, welding station welds in later circulation, and the product needs to circulate through hoist and mount many times, and operation process is loaded down with trivial details, has increased operating personnel's intensity of labour, also has the not hard up and shift and certain safety risk in the circulation in-process in location.

In addition, because the position accuracy of the tooth slot is low by using the chock block, after the motor stator is subjected to laminating welding, the punching concentricity and the tooth slot position accuracy of the motor stator need to be detected, but because the size of the inner cavity of the motor stator is limited and the axial depth dimension is large, the existing three-coordinate measuring instrument is difficult to completely go deep into the inner cavity of the motor stator for detection. According to the existing method, a high-precision detection plate is used and is pulled from top to bottom along a tooth groove, so that the deviation and the deformation of the punching sheet are detected, the actual detection effect is not ideal, and the detection error is large.

Based on the above defects in the prior art, it is necessary to develop a motor stator laminating welding tool and method with simpler assembly operation and higher manufacturing precision, and a detection device and a detection method convenient for accurate and rapid detection of the motor stator.

Disclosure of Invention

Technical problems to be solved by the invention

The invention aims to overcome the defects of complicated laminating assembly operation, low manufacturing efficiency, poor precision and the like of the existing motor stator core laminating welding device, and provides a motor stator core laminating forming device and a method, adopting the technical scheme of the invention, preliminarily positioning punching sheets and upper and lower tooth pressing plates by using a tooth space plugging strip to facilitate the rapid assembly of the motor stator core, wedging the tooth space plugging strip and a tooth space by using a plugging strip lower wedging mechanism and a plugging strip upper wedging mechanism to ensure the position precision of the tooth space on each punching sheet, simultaneously completing the wedging positioning of the tooth space of the punching sheet, the tensioning centering of the inner wall of the punching sheet and the pressing and pressure maintaining of the motor stator core in sequence in the process of pulling down and moving a central pull rod of the tensioning and centering mechanism by using the linkage action of the tensioning and centering mechanism, directly welding and fixing the laminating welding tool, reducing the laminating assembly step and the multi-station circulation process of the motor stator, the motor stator laminating welding operation is more convenient, the manufacturing efficiency of the motor stator is improved, the manufacturing precision of the motor stator is greatly improved, and the product percent of pass is improved. In addition, the invention also innovatively adopts the linear cutting principle to realize the detection of the coaxiality of the motor stator core, does not need complex detection tools and detection equipment, can conveniently detect the concentricity of the deep hole inner cavity of the motor stator core, and has simple and efficient detection operation and accurate and stable detection.

Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a motor stator core laminating and forming device which comprises a laminating and welding tool, wherein the laminating and welding tool comprises a laminating rack and a positioning and laminating mechanism arranged on the laminating rack, the positioning and laminating mechanism comprises a laminating and pressing driver, an assembling base, a tooth socket plug strip, a plug strip lower wedging mechanism, a plug strip upper wedging mechanism and a tensioning and centering mechanism, and the positioning and laminating mechanism comprises:

the assembly base is arranged on the laminating machine frame, and the upper part of the assembly base is provided with an annular positioning boss for positioning a lower flange end plate of a motor stator core;

the lower wedging mechanism of the tampon comprises a lower floating support plate sleeved outside the positioning boss and at least two lower push rods arranged below the lower floating support plate, the lower push rods are uniformly distributed in the circumferential direction of the positioning boss, each lower push rod is arranged at the lower part of the positioning boss in a radially sliding manner, and the lower floating support plate is in transmission connection with each lower push rod through a first elastic conversion mechanism and is used for converting the downward pressing action of the lower flange end plate on the lower floating support plate into the radial inward thrust action of each lower push rod;

the upper wedge mechanism of the stuff-stuffing strip comprises a first upper press plate, a second upper press plate and upper push rods which are arranged at the upper part of the first upper press plate in a radial sliding manner, a positioning table which can be matched with an upper flange end plate of a motor stator iron core in a positioning manner is arranged below the first upper press plate, the number of the upper push rods is equal to that of the lower push rods, the upper and lower positions of the upper push rods correspond to that of the lower push rods, the second upper press plate is arranged above the first upper press plate in a vertical sliding manner, and the second upper press plate is respectively in transmission connection with each upper push rod through a second elastic conversion mechanism and is used for converting the downward pressing action of the second upper press plate into the radial inward thrust action of each upper push rod and the downward pressing action of the first upper press plate;

the tooth socket plugging strip is provided with a cross section shape capable of being wedged with a tooth groove on the punching sheet, the tooth socket plugging strip is arranged in the tooth groove in a penetrating mode, the upper end and the lower end of the tooth socket plugging strip are matched with the corresponding lower push rod and the upper push rod respectively, and the tooth socket plugging strip and the tooth groove are wedged tightly under the radial inward thrust action of the lower push rod and the upper push rod;

the tension centering mechanism comprises a central pull rod, an outer sleeve and a tension plate, wherein the upper end of the central pull rod is provided with a compression plate which can be in compression fit with a second upper pressure plate, the central pull rod passes through pull rod holes of a first upper pressure plate and a second upper pressure plate and then is detachably connected with a laminating compression driver positioned below the assembly base, the outer sleeve is sleeved on the outer side of the central pull rod, the central pull rod and the outer sleeve are connected with the tension plate through a stay rod mechanism, the tension plate is driven to contract or open through the stay rod mechanism when the central pull rod and the outer sleeve move axially relative to each other, at least two tension plates are uniformly arranged along the circumferential direction, the lower end of the outer sleeve can be abutted against the assembly base in the pull-down process of the central pull rod and is used for tensioning the punched hole of the tension plate when the laminating compression driver pulls the central pull rod downwards, and the motor stator iron cores which are stacked together are laminated and compressed through the wedge mechanism on the plug strip.

Furthermore, the positioning and laminating mechanism is arranged on the laminating machine frame through a turnover mechanism, the turnover mechanism comprises a turnover seat, a turnover driving mechanism and a rotary driving mechanism, the turnover seat is rotatably arranged on the laminating machine frame through a turnover rotating shaft, and the turnover driving mechanism is arranged on the laminating machine frame and used for controlling the turnover seat to horizontally turn over; the assembling base is rotatably arranged on the overturning seat through a rotary supporting table, and the rotary driving mechanism is arranged on the overturning seat and used for controlling the assembling base to axially rotate.

Furthermore, the overturning driving mechanism comprises an overturning driver, a sliding seat, a guide rod, a rack and an overturning gear, wherein the sliding seat is slidably mounted on the laminating machine frame through the guide rod, the rack is fixed on the sliding seat, the overturning gear is fixed on the overturning rotating shaft, the rack is meshed with the overturning gear, and the overturning driver is mounted between the laminating machine frame and the sliding seat and used for driving the rack to linearly move through the sliding seat; the rotary driving mechanism comprises a rotary driver, a transmission gear and a rotary outer gear ring, the rotary outer gear ring and a rotary supporting table are coaxially fixed at the lower part of the assembly base, the rotary supporting table is arranged between the rotary outer gear ring and the overturning seat, the rotary driver is installed on the overturning seat, and an output shaft of the rotary driver is in transmission connection with the rotary outer gear ring through the transmission gear.

Furthermore, the first elastic conversion mechanism comprises a lower guide rod, a lower sliding block, a lower pressure spring and a lower inclined push rod, the lower guide rod is vertically installed on the assembly base, the lower sliding block and the lower pressure spring are sequentially sleeved on the lower guide rod, the lower floating support plate is arranged on the lower guide rod in a penetrating mode and located above the lower pressure spring, the lower sliding block is connected with the outer end of the corresponding lower push rod through the lower inclined push rod, and the lower inclined push rod is hinged with the lower sliding block and the lower push rod respectively;

the second elasticity conversion mechanism include guide bar, go up push rod to one side, go up sliding block and last compression spring, last guide bar vertical install on first top board, last sliding block and last compression spring overlap in proper order and establish on last guide bar, the second top board wear to establish on last guide bar to be located compression spring's top, last sliding block be connected through the outer end of last push rod that goes up push rod and correspond, last push rod to one side articulated mutually with last sliding block and last push rod respectively.

Furthermore, the stay bar mechanism comprises a tension stay bar and an inclined pull bar, the inner side of the tension plate is connected with the outer sleeve through the tension stay bar to form a parallelogram mechanism, the side wall of the outer sleeve is provided with a vertical opening, the central pull bar is provided with a support arm extending out of the vertical opening, one end of the inclined pull bar is hinged with the support arm, and the other end of the inclined pull bar is hinged with the middle part of the tension stay bar.

The detection tool comprises a detection rack, a detection positioning seat, a positioning seat rotating mechanism, an X-axis driving mechanism, a Y-axis driving mechanism, a discharge detection mechanism and an alignment mechanism, wherein the detection positioning seat is rotatably arranged on a detection table of the detection rack, and the positioning seat rotating mechanism is in transmission connection with the detection positioning seat and is used for driving the detection positioning seat to rotate; the discharge detection mechanism is arranged on the detection rack through an X-axis driving mechanism and a Y-axis driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism respectively drive the discharge detection mechanism to move in the X-axis direction and the Y-axis direction, and the alignment mechanism is positioned on one side of the detection positioning seat and is used for aligning the verticality of the discharge detection mechanism;

the discharge detection mechanism comprises a take-up and pay-off mechanism, a vertical support frame, a horizontal lower support frame, a horizontal upper support frame, a tensioning mechanism, an upper moving pulley block, a U-axis adjusting mechanism, a V-axis adjusting mechanism and a discharge wire, the vertical support frame, the horizontal lower support frame and the horizontal upper support frame are connected to form an Contraband-shaped frame, the upper movable pulley block is arranged on the horizontal upper bracket through a U-axis adjusting mechanism and a V-axis adjusting mechanism, the U-axis adjusting mechanism and the V-axis adjusting mechanism respectively drive the upper movable pulley block to move in the directions of a U axis and a V axis, the horizontal lower bracket is provided with a lower pulley, the wire take-up and pay-off mechanism is arranged at the rear part of the Contraband-shaped frame, the discharge wire is wound on the wire take-up and pay-off mechanism, and then the discharge wire passes through the lower pulley, the upper movable pulley block and the tensioning mechanism in a winding manner, and a vertical and tight discharge wire detection section is formed between the horizontal lower bracket and the horizontal upper bracket; the detection positioning seat is positioned between the horizontal lower support and the horizontal upper support, and the discharge wire detection section penetrates through a center hole of the detection positioning seat and is used for detecting the lamination welding coaxiality of the punching sheet through the discharge uniformity between the discharge wire detection section and the inner hole wall of the motor stator core on the detection positioning seat.

Furthermore, the winding and unwinding mechanism comprises a winding and unwinding motor, a winding roller, a speed reduction transmission gear set, a winding sliding frame, a winding driving screw, a sliding frame guide rod and a transmission shaft, the winding sliding frame is installed through the sliding frame guide rod in a horizontal sliding mode, the winding driving screw is rotatably installed on the lower portion of the winding sliding frame and matched with a fixed screw nut, the winding roller is rotatably installed on the upper portion of the winding sliding frame, the speed reduction transmission gear set comprises a driving gear, a first-stage driven gear, a second-stage driven gear and a roller gear, the winding and unwinding motor is installed on one side of the winding sliding frame, the transmission shaft is coaxially arranged on the inner side of the winding roller in a penetrating mode, one end of the transmission shaft is in transmission connection with a motor shaft of the winding and unwinding motor, the other end of the transmission shaft is provided with a driving gear, the first-stage driven gear and the second-stage driven gear are respectively fixed at one end of the winding driving screw, the driving gear is meshed with the first-stage driven gear, the second-stage driven gear is meshed with the roller gear, the roller gear is fixed at one end of the wire winding roller, and the discharge wire is wound on the wire winding roller;

the U-axis adjusting mechanism comprises a U-axis adjusting motor and a fixed mounting frame, the V-axis adjusting mechanism comprises a V-axis adjusting motor and a movable mounting frame, the fixed mounting frame is fixed on the horizontal upper support, the movable mounting frame is slidably mounted on the fixed mounting frame along the U-axis direction, and the U-axis adjusting motor is fixed on one side of the fixed mounting frame and is in transmission connection with the movable mounting frame through a ball screw transmission mechanism; the upper movable pulley block is slidably arranged on the movable mounting rack along the V-axis direction, and the V-axis adjusting motor is fixed on one side of the movable mounting rack and is in transmission connection with the upper movable pulley block through a ball screw transmission mechanism; the U-axis adjusting motor is provided with a U-axis adjusting knob, and the V-axis adjusting motor is provided with a V-axis adjusting knob.

The invention discloses a motor stator iron core laminating and forming method, which adopts the motor stator iron core laminating and forming device and comprises the following steps:

s1, laminating: the lower flange end plate is positioned and installed on a positioning boss of the assembling base, a lower tooth pressing plate is placed on the lower flange end plate, the position of the lower tooth pressing plate on the lower flange end plate is adjusted, then the tooth socket filler strip is inserted into a tooth socket corresponding to the lower tooth pressing plate, and the end part of a corresponding lower push rod is abutted against the lower end of the tooth socket filler strip; sequentially stacking a set number of punching sheets on a lower tooth pressing plate by utilizing the preliminary positioning function of the tooth socket stuff, and then stacking an upper tooth pressing plate on the uppermost punching sheet; positioning the lower part of the welding rib plate on the lower flange end plate by using a positioning pin, and positioning and mounting the upper flange end plate on the upper tooth pressing plate by using the positioning pin; then, an assembly of the tensioning and centering mechanism and the wedging mechanism on the tampon is installed from the upper part, so that the tensioning and centering mechanism is positioned on the inner side of the punching sheet, the wedging mechanism on the tampon is positioned on the upper part of the upper flange end plate, and the position of the wedging mechanism on the tampon is adjusted, so that the end part of the corresponding upper push rod is abutted against the upper end of the tooth socket tampon; the lower end of the central pull rod is connected with a laminating pressing driver, the central pull rod is pulled down by the laminating pressing driver, the central pull rod moves downwards, downward pressure is applied to an upper wedging mechanism and a lower wedging mechanism of the plug strip through a pressing plate, and the corresponding tooth socket plug strip moves towards the center and is wedged with the tooth socket, so that the position accuracy of the tooth socket on each punching sheet is ensured; the laminating and pressing driver continues to drive the central pull rod to press downwards, the lower part of the outer sleeve is limited by the assembling base, and then each tensioning plate expands outwards to ensure the coaxiality of each punching sheet, and the motor stator iron cores which are stacked together are further laminated and pressed tightly;

s2, welding: and (3) maintaining the pressure of the motor stator iron cores which are laminated together by utilizing the laminating and pressing driver, and welding the motor stator iron cores by utilizing welding equipment in a pressure maintaining state to obtain a motor stator iron core product.

Furthermore, in step S2, the positioning and stacking mechanism is mounted on the stacking rack through a turnover mechanism, the turnover mechanism can drive the stacking positioning mechanism to perform horizontal turnover movement and axial rotation movement, and during the welding process, the turnover mechanism drives the stacked stator cores of the motor to perform horizontal turnover and axial rotation movement, so as to change different welding positions.

Further, the method further includes a step S3 of detecting the motor stator core product by using a detection tool in the motor stator core lamination molding device, where the detection method specifically includes:

s3-1, correcting and zero-correcting: moving an alignment block in an alignment mechanism to the inner side of a center hole of the detection positioning seat, driving a discharge wire detection section in a discharge wire to be close to the alignment block through an X-axis driving mechanism and a Y-axis driving mechanism, adjusting the taper of the discharge wire detection section through a U-axis adjusting mechanism and a V-axis adjusting mechanism respectively, observing the discharge conditions of two reference surfaces of the discharge wire detection section and the alignment block, finishing alignment when the discharge of the discharge wire detection section and the alignment block is uniform, and performing zero calibration on coordinates of the U-axis adjusting mechanism and the V-axis adjusting mechanism;

s3-2, product installation: moving an alignment block in the alignment mechanism, switching off the electric wire, positioning and mounting the product to be detected on the detection positioning seat, penetrating the discharge wire through an inner hole of the motor stator core product, and then connecting the discharge wire to form a loop and tensioning the loop;

s3-3, discharge detection: the discharge wire is connected with the negative pole of a power supply, a product to be detected is connected with the positive pole of the power supply, the discharge wire detection section in the discharge wire is driven to be close to the inner hole wall of the motor stator core product through the X-axis driving mechanism and the Y-axis driving mechanism, the power supply is switched on, electric spark discharge is generated between the discharge wire detection section and the inner hole wall of the motor stator core product, whether electric spark discharge on the inner hole wall is uniform or not is observed, electric spark discharge on the inner hole wall is enabled to be in a uniform state through manually adjusting the U-axis adjusting mechanism and the V-axis adjusting mechanism, the moving displacement of the U-axis adjusting mechanism and the V-axis adjusting mechanism is recorded by an electric spark discharge system, and the coaxiality of punching sheets of the motor stator core product is reflected through the moving displacement of the U-axis and the V-axis;

and S3-4, driving the discharge wire detection section to leave the inner hole wall of the motor stator core product through the X-axis driving mechanism and the Y-axis driving mechanism, then driving the detection positioning seat to rotate through the positioning seat rotating mechanism to switch to the next detection position, and repeating the step S3-3 to finish the punching coaxiality detection of the motor stator core product.

Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

(1) the invention relates to a motor stator core laminating forming device and a method, wherein a laminating welding tool comprises a laminating machine frame and a positioning laminating mechanism arranged on the laminating machine frame, the positioning laminating mechanism comprises a laminating pressing driver, an assembling base, a tooth space plug strip, a plug strip lower wedging mechanism, a plug strip upper wedging mechanism and a tensioning centering mechanism, the tooth space plug strip is used for preliminarily positioning a punching sheet and an upper tooth pressing plate and a lower tooth pressing plate, the rapid assembly of a motor stator core is convenient, the tooth space plug strip is wedged tightly with the tooth space by the plug strip lower wedging mechanism and the plug strip upper wedging mechanism, the position precision of the tooth space on each punching sheet is ensured, simultaneously, the wedge positioning of the tooth space of the punching sheet, the tensioning centering of the inner wall of the punching sheet and the pressure maintaining of the motor stator are sequentially completed in the process of the downward pulling movement of a central pull rod of the tensioning centering mechanism, the laminating welding tool can be directly welded and fixed, the motor stator laminating assembly step and the multi-station circulation process are reduced, so that the motor stator laminating welding operation is more convenient, the manufacturing efficiency of the motor stator is improved, the manufacturing precision of the motor stator is greatly improved, and the product percent of pass is improved;

(2) according to the motor stator core laminating forming device and method, the positioning laminating mechanism is arranged on the laminating rack through the turnover mechanism, the turnover mechanism can drive the laminating positioning mechanism to horizontally turn over and axially rotate, and the turnover mechanism drives the laminated motor stator cores to horizontally turn over and axially rotate during welding, so that different welding positions are changed, welding operation is simpler and more convenient, automatic welding is facilitated by matching with a welding robot, welding efficiency is high, and welding effect is good;

(3) according to the motor stator core laminating and forming device, the overturning driving mechanism adopts the gear rack mechanism to convert the linear motion of the overturning driver into the overturning motion of the overturning seat, the rotary driving mechanism adopts the gear transmission mechanism to control the axial rotary motion of the assembling base, the structure is simple and compact, the transmission is stable and reliable, and the stopping position precision of horizontal overturning and axial rotation is high;

(4) according to the motor stator core laminating and forming device, the first elastic conversion mechanism and the second elastic conversion mechanism are designed by the pressure spring and the inclined push rod, the structural design is simple, the manufacturing is convenient, the push rod can flexibly extrude a tooth socket plug strip under the elastic action of the pressure spring, and tooth socket deformation and damage caused by rigid extrusion are avoided;

(5) according to the motor stator core laminating and forming device, the stay bar mechanism comprises the tension stay bar and the diagonal draw bar, the inner side of the tension plate is connected with the outer sleeve through the tension stay bar to form a parallelogram mechanism, the tension plate is driven to contract or expand through the relative axial movement of the central pull bar and the outer sleeve, the structural design is simple and compact, the complex assembly process in the prior art is reduced, the centering of a punching sheet can be completed only through the pull-down movement of the central pull bar, and the manufactured product has higher coaxiality;

(6) the invention relates to a motor stator core laminating forming device and a method, and further comprises a detection tool, wherein the detection tool comprises a detection rack, a detection positioning seat, a positioning seat rotating mechanism, an X-axis driving mechanism, a Y-axis driving mechanism, a discharge detection mechanism and an alignment mechanism, the coaxiality of a motor stator core is detected by skillfully utilizing the existing wire cutting electric spark discharge principle, complex detection tools and detection equipment are not needed, the concentricity of an inner cavity of a deep hole core of a motor stator core can be conveniently detected, the detection operation is simple and efficient, and the detection is accurate and stable;

(7) according to the motor stator iron core laminating and forming device and method, the laminating welding tool and the wire cutting principle detection tool are organically combined together, quality detection can be carried out on the detection tool after the product is laminated and welded, and the manufacturing efficiency of the motor stator iron core is greatly improved.

Drawings

Fig. 1 is a schematic view of an assembly structure of a stator of a conventional motor;

fig. 2 is a schematic diagram of a split structure of a conventional motor stator;

fig. 3 is a schematic perspective view of a laminating and welding tool in the laminating and forming device for the motor stator core according to the present invention;

FIG. 4 is a schematic view of an assembly state of a motor stator core on a laminating welding tool in the invention;

FIG. 5 is a schematic view of a three-dimensional structure of a turnover mechanism of the overlying welding tool of the present invention;

FIG. 6 is a schematic perspective view of a positioning and laminating mechanism of the laminating and welding tool of the present invention;

FIG. 7 is a schematic view of a split structure of a positioning and laminating mechanism and a motor stator core of the laminating and welding tool of the invention;

fig. 8 is a schematic sectional view of an assembly structure of a stator core of a motor on a positioning and laminating mechanism according to the present invention;

FIG. 9 is a schematic perspective view of a wedging mechanism on a plug strip in a positioning and laminating mechanism according to the present invention;

FIG. 10 is a schematic structural diagram of a motor stator core laminating and molding device with a detection tool according to the present invention;

FIG. 11 is a schematic perspective view of the inspection tool of the present invention;

FIG. 12 is a schematic structural view of a detecting positioning seat and an alignment mechanism of the detecting tool of the present invention;

fig. 13 is a schematic perspective view of a discharge detection mechanism of the detection tool of the present invention;

FIG. 14 is a schematic perspective view of a take-up and pay-off mechanism of the discharge detection mechanism of the present invention;

fig. 15 is a schematic view of a detection state of the motor stator core on the detection tool in the invention.

The reference numbers in the schematic drawings illustrate:

a1, a lower flange end plate; a2, a lower tooth pressing plate; a3, punching; a4, an upper tooth pressure plate; a5, an upper flange end plate; a6, welding rib plates; a7, positioning pins; a8, a tooth groove;

i, laminating and welding a tool; 1. laminating the machine frame; 1-1, a caster; 2. positioning a laminating mechanism; 2-1, laminating and pressing a driver; 2-1a, connecting pieces; 2-1b, connecting a nut; 2-2, assembling a base; 2-2-1, positioning a boss; 2-2-2, a limit stop table; 2-3, wedging mechanism under the stuff strip; 2-3-1, a lower guide rod; 2-3-2, a lower sliding block; 2-3-3, a lower pressure spring; 2-3-4, a lower inclined push rod; 2-3-5, a lower push rod; 2-3-6, lower floating support plate; 2-4, tensioning and centering mechanisms; 2-4-1, a central pull rod; 2-4-1a, a pressure plate; 2-4-2, an outer sleeve; 2-4-3, tensioning plates; 2-4-4, tensioning the stay bar; 2-4-5, diagonal draw bars; 2-5, a tooth groove filler strip; 2-6, wedging mechanism on the filler rod; 2-6-1, a first upper press plate; 2-6-1a and a push rod mounting plate; 2-6-1b, a plug hole; 2-6-2, a second upper press plate; 2-6-3, an upper guide rod; 2-6-4, an upper push rod; 2-6-4a, an upper push claw; 2-6-5, an upper inclined push rod; 2-6-6, an upper sliding block; 2-6-7, an upper pressure spring; 2-6-8, a draw bar hole; 3. a turnover mechanism; 3-1, overturning a seat; 3-1a, turning over the rotating shaft; 3-2, overturning a driving mechanism; 3-2-1, a flip driver; 3-2-2, a sliding seat; 3-2-3, a guide rod; 3-2-4, a rack; 3-2-5, a turnover gear; 3-3, a rotary driving mechanism; 3-3-1, a rotary drive; 3-3-2, a transmission gear; 3-3-2a, a gear shaft; 3-3-3, rotating the outer gear ring; 3-3-4, rotating the support platform;

II, detecting a tool; 4. detecting the rack; 4-1, detecting a platform; 5. detecting a positioning seat; 5-1, a positioning part; 5-2, positioning seat outer gear ring; 6. a positioning seat rotating mechanism; 6-1, positioning seat rotating motor; 6-2, rotating the transmission gear by the positioning seat; 7. an X-axis drive mechanism; 7-1, an X-axis driving motor; 7-2, driving a lead screw by an X axis; 7-3, an X-axis guide rail; 7-4, an X-axis slide carriage; 8. a Y-axis drive mechanism; 8-1, a Y-axis driving motor; 8-2, driving a lead screw by a Y axis; 8-3, Y-axis guide rail; 8-4, a Y-axis slide carriage; 9. a discharge detection mechanism; 9-1, a take-up and pay-off mechanism; 9-1-1, a take-up and pay-off motor; 9-1-2, and a wire winding roller; 9-1-3, a speed reduction transmission gear set; 9-1-3a, a driving gear; 9-1-3b, a primary driven gear; 9-1-3c, a secondary driven gear; 9-1-3d, roller gear; 9-1-4, a wire winding sliding frame; 9-1-5, winding a wire driving screw rod; 9-1-6, sliding rack guide rod; 9-1-7, a transmission shaft; 9-2, a vertical support frame; 9-3, a horizontal lower bracket; 9-3-1, a lower pulley; 9-4, horizontally mounting an upper bracket; 9-5, a tensioning mechanism; 9-6, moving the pulley block upwards; 9-7, a U-axis adjusting mechanism; 9-7-1, a U-axis adjusting motor; 9-7-1a and a U-axis adjusting knob; 9-7-2, fixing the mounting rack; 9-8, a V-axis adjusting mechanism; 9-8-1, a V-axis adjusting motor; 9-8-1a and a V-axis adjusting knob; 9-8-2 of a movable mounting rack; 9-9, discharge wire; 10. an alignment mechanism; 10-1, aligning blocks; 10-2, aligning block adjusting handwheels; 10-3, aligning a block adjusting screw rod; 10-4, aligning block adjusting guide rods; 11. and (5) testing the product to be tested.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Referring to fig. 3 to 9, the motor stator core laminating and forming device of the embodiment includes a laminating and welding tool i, the laminating and welding tool i includes a laminating frame 1 and a positioning and laminating mechanism 2 installed on the laminating frame 1, the positioning and laminating mechanism 2 includes a laminating and pressing driver 2-1, an assembling base 2-2, a tooth space plug strip 2-5, a plug strip lower wedging mechanism 2-3, a plug strip upper wedging mechanism 2-6 and a tensioning and centering mechanism 2-4, the laminating and pressing driver 2-1 is used for pressing and maintaining pressure of an assembled motor stator core, the assembling base 2-2 is used as an assembling platform of the motor stator core, the tooth space plug strip 2-5 is used for positioning a tooth space A8 of the motor stator core, the plug strip lower wedging mechanism 2-3 and the plug strip upper wedging mechanism 2-6 are respectively used for wedging upper and lower ends of the tooth space plug strip 2-5, the tensioning and centering mechanism 2-4 is used for tensioning and centering the assembled punching sheet A3. Wherein:

the assembling base 2-2 is arranged on the laminating machine frame 1, the upper part of the assembling base 2-2 is provided with an annular positioning boss 2-2-1 for positioning a lower flange end plate A1 of the motor stator core, and a concave cavity on the lower end face of the lower flange end plate A1 can be positioned on the positioning boss 2-2-1.

The lower wedging mechanism 2-3 of the tampon comprises a lower floating support plate 2-3-6 sleeved outside the positioning boss 2-2-1 and at least two lower push rods 2-3-5 arranged below the lower floating support plate 2-3-6, the lower floating support plate 2-3-6 is in an elastic suspension state and can support the lower end surface of a lower flange end plate A1, the lower push rods 2-3-5 are uniformly distributed in the circumferential direction of the positioning boss 2-2-1, each lower push rod 2-3-5 is arranged at the lower part of the positioning boss 2-2-1 in a radial sliding manner, the lower floating support plate 2-3-6 is respectively in transmission connection with each lower push rod 2-3-5 through a first elastic conversion mechanism, so as to convert the pressing action of the lower flange end plate A1 on the lower floating support plate 2-3-6 into the radial inward pushing action of each lower push rod 2-3-5. In the present embodiment, the push-down rods 2-3-5 are preferably provided in four, and two push-down rods 2-3-5 are spaced apart to be diametrically opposed to each other, so that the pushing forces of the push-down rods 2-3-5 can be balanced.

The upper wedging mechanism 2-6 comprises a first upper press plate 2-6-1, a second upper press plate 2-6-2 and an upper push rod 2-6-4 arranged on the upper part of the first upper press plate 2-6-1 in a sliding manner along the radial direction, a positioning table capable of being matched with an upper flange end plate A5 of a motor stator core in a positioning manner is arranged below the first upper press plate 2-6-1, during assembly, the first upper press plate 2-6-1 is pressed on the upper flange end plate A5, the number of the upper push rods 2-6-4 is equal to the number of the lower push rods 2-3-5, the upper positions of the upper push rods correspond to the lower positions of the upper push rods, the second upper press plate 2-6-2 is arranged above the first upper press plate 2-6-1 in a sliding manner up and down, and the second upper press plate 2-6-2 is in an elastic suspension state, the second upper pressing plate 2-6-2 is in transmission connection with each upper push rod 2-6-4 through a second elastic conversion mechanism respectively, and is used for converting the pressing action of the second upper pressing plate 2-6-2 into the radial inward pushing action of each upper push rod 2-6-4 and the pressing action of the first upper pressing plate 2-6-1.

The tooth slot plugging strips 2-5 have cross-sectional shapes capable of being wedged with tooth slots A8 on punching sheets A3, the size of the tooth slot plugging strips 2-5 is smaller than that of the tooth slots A8 close to the outer side, so that the tooth slot plugging strips 2-5 can be conveniently inserted into the tooth slots A8, the size of the tooth slot plugging strips 2-5 is larger than that of the tooth slots A8 close to inner side notches, the tooth slot plugging strips 2-5 can be wedged with the tooth slots A8 in the process of moving towards the center of the punching sheets A3, and therefore the tooth slot position accuracy of each punching sheet A3 can be guaranteed. The tooth groove plugging strips 2-5 penetrate through corresponding tooth grooves A8 of the punching sheet A3, the upper ends and the lower ends of the tooth groove plugging strips 2-5 are matched with corresponding lower push rods 2-3-5 and upper push rods 2-6-4 respectively, and the tooth groove plugging strips 2-5 are wedged tightly with the tooth grooves A8 under the action of radial inward thrust of the lower push rods 2-3-5 and the upper push rods 2-6-4.

The tensioning and centering mechanism 2-4 and the wedging mechanism 2-6 on the plug strip are combined into an integral assembly which is used as the assembly for mounting and dismounting. The tensioning and centering mechanism 2-4 comprises a central pull rod 2-4-1, an outer sleeve 2-4-2 and a tensioning plate 2-4-3, wherein the upper end of the central pull rod 2-4-1 is provided with a pressing plate 2-4-1a capable of being in press fit with a second upper pressing plate 2-6-2, pull rod holes 2-6-8 (shown in figure 9) are respectively arranged at the centers of the first upper pressing plate 2-6-1 and the second upper pressing plate 2-6-2, the central pull rod 2-4-1 penetrates through the pull rod holes 2-6-8 of the first upper pressing plate 2-6-1 and the second upper pressing plate 2-6-2 and then is connected with a laminating and pressing driver 2-1 positioned below an assembly base 2-2, the outer sleeve 2-4-2 is sleeved on the outer side of the central pull rod 2-4-1, the central pull rod 2-4-1 and the outer sleeve 2-4-2 are connected with the tension plates 2-4-3 through a support rod mechanism, the tension plates 2-4-3 are driven to contract or expand through the support rod mechanism when the central pull rod 2-4-1 and the outer sleeve 2-4-2 move axially relative to each other, at least two tension plates 2-4-3 are uniformly arranged along the circumferential direction, and in the embodiment, four tension plates 2-4-3 are preferably arranged, so that the punching sheets A3 can be better dispersed and tensioned, and the concentricity of each punching sheet A3 is better; the lower end of the outer sleeve 2-4-2 can be abutted against the assembly base 2-2 in the process of pulling the central pull rod 2-4-1 downwards, so that when the overlying compaction driver 2-1 pulls the central pull rod 2-4-1 downwards, the inner hole of the stamped steel A3 is tensioned through the tensioning plate 2-4-3, and the overlying motor stator cores are compacted through the wedging mechanism 2-6 on the plug strip along with the pulling of the central pull rod 2-4-1.

By adopting the laminating welding tool I, the punching sheet A3 and the upper and lower tooth pressing plates are preliminarily positioned by using the tooth space plugging strips 2-5, so that the rapid assembly of the motor stator core is facilitated, the tooth space plugging strips 2-5 and the tooth space A8 are wedged tightly by using the plugging strip lower wedging mechanism 2-3 and the plugging strip upper wedging mechanism 2-6, the position precision of the tooth space A8 on each punching sheet A3 is ensured, simultaneously, the laminating positioning of the tooth space, the punching sheet inner wall tensioning centering and the pressing and pressure maintaining of the motor stator core are sequentially completed in the pull-down moving process of the central pull rod 2-4-1 by using the linkage action of the tensioning and centering mechanism 2-4, the laminating welding tool can be directly welded and fixed, the laminating assembly steps and the multi-station transfer process of the motor stator are reduced, the motor stator welding operation is more convenient, and the manufacturing efficiency of the motor stator is improved, the manufacturing precision of the motor stator is greatly improved, and the product percent of pass is improved.

As shown in fig. 3 to fig. 5, in the present embodiment, the positioning and laminating mechanism 2 is mounted on the laminating machine frame 1 through the turnover mechanism 3, so that the positioning and laminating mechanism 2 can drive the motor stator core to rotate, so as to facilitate the welding operation. The turnover mechanism 3 comprises a turnover seat 3-1, a turnover driving mechanism 3-2 and a rotary driving mechanism 3-3, wherein the turnover seat 3-1 is rotatably arranged on the laminating machine frame 1 through a turnover rotating shaft 3-1a, and the turnover driving mechanism 3-2 is arranged on the laminating machine frame 1 and is used for controlling the turnover seat 3-1 to horizontally turn over. The assembly base 2-2 is rotatably arranged on the overturning seat 3-1 through a rotary supporting platform 3-3-4, and the rotary driving mechanism 3-3 is arranged on the overturning seat 3-1 and used for controlling the axial rotary motion of the assembly base 2-2. In welding process, tilting mechanism 3 drives and folds the horizontal upset of motor stator core and axial rotary motion together, changes different welding position, makes welding operation simple and convenient more, is favorable to cooperating welding robot to carry out automated welding, and welding efficiency is high and the welding is effectual. Specifically, the overturning driving mechanism 3-2 comprises an overturning driver 3-2-1, a sliding seat 3-2-2, a guide rod 3-2-3, a rack 3-2-4 and an overturning gear 3-2-5, the sliding seat 3-2-2 is slidably mounted on the laminating machine frame 1 through the guide rod 3-2-3, the rack 3-2-4 is fixed on the sliding seat 3-2-2, the overturning gear 3-2-5 is fixed on an overturning rotating shaft 3-1a, the rack 3-2-4 is meshed with the overturning gear 3-2-5, the overturning driver 3-2-1 is mounted between the laminating machine frame 1 and the sliding seat 3-2-2, is used for driving the rack 3-2-4 to move linearly through the sliding seat 3-2-2. The turnover driver 3-2-1 can adopt a linear driver such as an electric push rod, and a gear rack mechanism is adopted to convert the linear motion of the turnover driver 3-2-1 into the turnover motion of the turnover seat 3-1. The rotary driving mechanism 3-3 comprises a rotary driver 3-3-1, a transmission gear 3-3-2 and a rotary outer gear ring 3-3-3, the rotary outer gear ring 3-3-3 and a rotary support platform 3-3-4 are coaxially fixed at the lower part of the assembly base 2-2, the rotary support platform 3-3-4 is arranged between the rotary outer gear ring 3-3-3 and the overturning seat 3-1, the rotary support platform 3-3-4 is an existing product, which can bear the heavy load, a rotary driver 3-3-1 is arranged on a turnover seat 3-1, and the output shaft of the rotary driver 3-3-1 is in transmission connection with the rotary outer gear ring 3-3-3 through the transmission gear 3-3-2. The rotary driver 3-3-1 preferably adopts a motor which is connected with a gear shaft 3-3-2a of the transmission gear 3-3-2 through a coupler so as to drive the rotary outer gear ring 3-3-3 to rotate and realize the axial rotation control of the assembly base 2-2. By adopting the turnover driving mechanism 3-2 and the rotary driving mechanism 3-3, the structure is simple and compact, the transmission is stable and reliable, and the horizontal turnover and axial rotation stopping position precision is high. The lower part of the overturning seat 3-1 is provided with a mounting frame, and the laminating pressing driver 2-1 is arranged on the mounting frame of the overturning seat 3-1. The laminated pressing driver 2-1 can adopt a hydraulic oil cylinder or a heavy electric push rod, and can provide enough pulling force for the central pull rod 2-4-1 to press the stacked motor stator iron cores. In addition, in order to facilitate flexible arrangement of the motor stator core laminating and forming device, the bottom of the laminating rack 1 is also provided with a caster 1-1 with a self-locking function, so that the motor stator core laminating and forming device can be moved conveniently. Because the rotary driving mechanism 3-3 drives the assembly base 2-2 to rotate under the condition that the central pull rod 2-4-1 is tensioned by the overlying compaction driver 2-1, the central pull rod 2-4-1 is required to be prevented from being unscrewed and loosened due to the rotary motion, the overlying compaction driver 2-1 can be connected with the connecting nut 2-1b through the connecting piece 2-1a, the connecting nut 2-1b detachably connects the connecting piece 2-1a with the lower end of the central pull rod 2-4-1, the connecting piece 2-1a is axially and rotatably connected with the telescopic end of the overlying compaction driver 2-1, and the connecting piece 2-1a and the extensible end of the overlying compaction driver 2-1 cannot relatively axially move; certainly, the lower end of the overlying compaction driver 2-1 can be connected with the mounting frame at the lower part of the turnover seat 3-1 in an axial rotation mode, so that the overlying compaction driver 2-1 can rotate along with the central pull rod 2-4-1, and the connecting nut 2-1b can be effectively prevented from loosening.

As shown in fig. 5, 6 and 8, in this embodiment, the first elastic conversion mechanism includes a lower guide rod 2-3-1, a lower sliding block 2-3-2, a lower pressure spring 2-3-3 and a lower inclined push rod 2-3-4, the lower guide rod 2-3-1 is vertically installed on the assembly base 2-2, the lower sliding block 2-3-2 and the lower pressure spring 2-3-3 are sequentially sleeved on the lower guide rod 2-3-1, a lower floating support plate 2-3-6 is arranged on the lower guide rod 2-3-1 and located above the lower pressure spring 2-3-3, the lower sliding block 2-3-2 is connected with the outer end of the corresponding lower push rod 2-3-5 through the lower inclined push rod 2-3-4, the lower inclined push rod 2-3-4 is hinged with the lower sliding block 2-3-2 and the lower push rod 2-3-5 respectively. When the lower floating support plate 2-3-6 is stressed to move downwards, the lower floating support plate transfers the downward pressure to the lower sliding block 2-3-2 through the downward pressure spring 2-3-3, the lower sliding block 2-3-2 converts the downward pressure action into the horizontal radial thrust of the lower push rod 2-3-5 through the lower inclined push rod 2-3-4, and then the lower end of the tooth socket chock plug 2-5 is driven to move towards the center and exert the thrust action. In order to improve the matching stability of the lower push rod 2-3-5 and the tooth socket stuff bar 2-5, a lower push claw can be arranged on the lower push rod 2-3-5 and can be designed into a C shape and can be stably matched with the tooth socket stuff bar 2-5. In addition, in order to facilitate the installation of the tooth socket filler strips 2-5, the upper surface of the assembly base 2-2 is also provided with a limiting groove positioned below the lower push claw, and the lower ends of the tooth socket filler strips 2-5 can be inserted into the limiting groove during assembly.

Referring to fig. 9, the structure principle of the second elastic conversion mechanism is similar to that of the first elastic conversion mechanism, and the second elastic conversion mechanism comprises an upper guide rod 2-6-3, an upper inclined push rod 2-6-5, an upper sliding block 2-6-6 and an upper pressure spring 2-6-7, wherein the upper guide rod 2-6-3 is vertically installed on a first upper press plate 2-6-1, the upper sliding block 2-6-6 and the upper pressure spring 2-6-7 are sequentially sleeved on the upper guide rod 2-6-3, the second upper press plate 2-6-2 is arranged on the upper guide rod 2-6-3 and is located above the upper pressure spring 2-6-7, the upper sliding block 2-6-6 is connected with the outer end of the corresponding upper push rod 2-6-4 through the upper inclined push rod 2-6-5, the upper inclined push rod 2-6-5 is hinged with the upper sliding block 2-6-6 and the upper push rod 2-6-4 respectively. The first upper pressure plate 2-6-1 is also provided with a push rod mounting plate 2-6-1a, and the upper push rods 2-6-4 are slidably mounted on the corresponding push rod mounting plates 2-6-1 a. Similarly, in order to improve the matching stability of the upper push rod 2-6-4 and the tooth socket plugging strip 2-5, an upper push claw 2-6-4a can be arranged on the upper push rod 2-6-4, and the upper push claw 2-6-4a can be designed into a C shape and can be stably matched with the tooth socket plugging strip 2-5. In addition, a plugging strip hole 2-6-1b for a tooth socket plugging strip 2-5 to penetrate out is further formed in the position, corresponding to the position of the upper push claw 2-6-4a, of the first upper pressure plate 2-6-1. The first elastic conversion mechanism and the second elastic conversion mechanism are designed by adopting the pressure springs and the inclined push rods, the structure design is simple, the manufacture is convenient, the push rods can flexibly extrude the tooth socket filler rods 2-5 by utilizing the elastic action of the pressure springs, and the tooth socket deformation damage caused by rigid extrusion is avoided.

Referring to fig. 6 to 8, in this embodiment, the stay bar mechanism includes tension stay bars 2-4-4 and diagonal stay bars 2-4-5, the inner sides of the tension plates 2-4-3 are connected with the outer sleeve 2-4-2 through the tension stay bars 2-4-4 to form a parallelogram mechanism, so that each tension plate 2-4-3 can expand outward in parallel, a vertical opening is formed in the sidewall of the outer sleeve 2-4-2, a support arm extending out of the vertical opening is arranged on the central pull bar 2-4-1, one end of the diagonal stay bar 2-4-5 is hinged to the support arm, and the other end of the diagonal stay bar 2-4-4 is hinged to the middle of the tension stay bar 2-4-4. When the central pull rod 2-4-1 and the outer sleeve 2-4-2 move axially relatively, the diagonal pull rod 2-4-5 can drive the tension stay rod 2-4-4 to rotate, and further control the tension plate 2-4-3 to contract or expand. When the tensioning centering mechanism 2-4 is installed, each tensioning plate 2-4-3 is in a contracted state, the outer sleeve 2-4-2 moves downwards along with the central pull rod 2-4-1 in the process of pulling downwards, when the lower part of the outer sleeve 2-4-2 abuts against the upper surface of the assembly base 2-2, the outer sleeve 2-4-2 does not move downwards, the central pull rod 2-4-1 drives the tensioning stay rod 2-4-4 to expand outwards through the inclined pull rod 2-4-5, and each tensioning plate 2-4-3 is enabled to tension the inner wall of the punching sheet A3, so that the punching sheets A3 are enabled to be coaxial. In order to limit the lower end of the outer sleeve 2-4-2 conveniently, a limiting stop table 2-2-2 is further arranged on the upper surface of the assembling base 2-2, and the lower end of the outer sleeve 2-4-2 can abut against the limiting stop table 2-2-2 in the process that the central pull rod 2-4-1 is pulled downwards. By adopting the support rod mechanism, the structural design is simple and compact, the tooth groove positioning and the concentricity positioning of the punching sheet A3 can be realized only by pulling the central pull rod 2-4-1, the complex assembling process in the prior art is reduced, and the manufactured product has higher coaxiality.

Referring to fig. 6, 7 and 8, a method for laminating and molding a stator core of an electric machine according to the present embodiment, which uses the apparatus for laminating and molding a stator core of an electric machine described above, includes the following steps:

s1, laminating: positioning and installing a lower flange end plate A1 on a positioning boss 2-2-1 of an assembly base 2-2, placing a lower tooth pressing plate A2 on a lower flange end plate A1, adjusting the position of the lower tooth pressing plate A2 on the lower flange end plate A1, inserting a tooth socket stopper 2-5 into a tooth socket A8 corresponding to the lower tooth pressing plate A2, and enabling the end part of a corresponding lower push rod 2-3-5 to abut against the lower end of the tooth socket stopper 2-5; by utilizing the primary positioning function of the tooth slot plugging strips 2-5, a set number of punching sheets A3 are sequentially stacked on a lower tooth pressing plate A2, and then an upper tooth pressing plate A4 is stacked on the punching sheet A3 at the uppermost part (in order to ensure that the installation of the tooth slot plugging strips 2-5 is more stable, the punching sheets A3 with a certain height can be stacked on the lower tooth pressing plate A2, and then the tooth slot plugging strips 2-5 are installed in the corresponding tooth slots A8); the lower part of a welding rib plate A6 is positioned and installed on a lower flange end plate A1 by using a positioning pin A7, and then an upper flange end plate A5 is positioned and installed on an upper tooth pressure plate A4 by using a positioning pin A7; then, the assembly of the tensioning and centering mechanism 2-4 and the wedging mechanism 2-6 on the plug strip is installed from the upper part, so that the tensioning and centering mechanism 2-4 is positioned at the inner side of the punching sheet A3, the wedging mechanism 2-6 on the plug strip is positioned at the upper part of the upper flange end plate A5, and the position of the wedging mechanism 2-6 on the plug strip is adjusted, so that the end part of the corresponding upper push rod 2-6-4 is abutted against the upper end of the tooth socket plug strip 2-5; the lower end of the central pull rod 2-4-1 is connected with a laminating and pressing driver 2-1, the central pull rod 2-4-1 is pulled down by the laminating and pressing driver 2-1, the central pull rod 2-4-1 moves downwards, downward pressure is applied to the upper wedging mechanism 2-6 of the tampon and the lower wedging mechanism 2-3 of the tampon through the pressing plate 2-4-1a, after the second upper pressing plate 2-6-2 of the upper wedging mechanism 2-6 of the tampon and the lower floating supporting plate 2-3-6 of the lower wedging mechanism 2-3 of the tampon are pressed, the corresponding upper push rod 2-6-4 and the lower push rod 2-3-5 move to the center, further, the corresponding tooth slot plugging strips 2-5 move towards the center and are wedged tightly with the tooth slots A8, so that the position accuracy of the tooth slots A8 on each punching sheet A3 is guaranteed; the laminating and pressing driver 2-1 continuously drives the central pull rod 2-4-1 to press downwards, the lower portion of the outer sleeve 2-4-2 is limited by the assembling base 2-2, then the tensioning plates 2-4-3 expand outwards to guarantee the coaxiality of the punching sheets A3, meanwhile, the motor stator iron core portion is clamped between the assembling base 2-2 and the wedge-clamping mechanism 2-6 on the plug strip, and the stacked motor stator iron cores are further laminated and pressed tightly.

S2, welding: the motor stator iron cores which are laminated together are subjected to pressure maintaining by utilizing the laminating and pressing driver 2-1, the motor stator iron cores are welded by utilizing welding equipment in a pressure maintaining state, a motor stator iron core product is obtained, the motor stator iron core product does not need to be transferred to an oil press for laminating and then transferred to a welding station, and laminating and welding work on the motor stator iron cores can be completed on the laminating and welding tool I. In this step, location is folded and is pressed mechanism 2 and is installed on folding frame 1 through tilting mechanism 3, and tilting mechanism 3 can drive and fold and press 2 horizontal upset motions and axial direction rotary motion of positioning mechanism, and at the welding in-process, tilting mechanism 3 drives and folds the horizontal upset of motor stator iron core and axial direction rotary motion together, changes different welding position. Therefore, no matter manual welding or automatic welding of equipment, all angles and positions of the motor stator core can be conveniently welded, and the welding efficiency and the welding effect are improved. After welding is finished, the laminating and pressing driver 2-1 drives the central pull rod 2-4-1 to move upwards, the central pull rod 2-4-1 is detached from the driving end of the laminating and pressing driver 2-1, at the moment, the assembly of the tensioning and centering mechanism 2-4 and the wedging mechanism 2-6 on the plug strip can be integrally detached from the motor stator core, and the tooth slot plug strip 2-5 can also be pulled out from the tooth slot A8, so that a motor stator core product is obtained. When necessary, the motor stator core product can be transferred to a tempering procedure for tempering treatment.

Based on the motor stator core laminating and forming device and method, the tooth slot position accuracy of the punching sheet A3 can be ensured through the wedging action of the tooth slot filler strips 2-5; the coaxiality of the punching sheet A3 can be ensured through the tensioning action of each tensioning plate 2-4-3. And because the tension centering mechanisms 2-4 may have unavoidable assembly and manufacturing precision errors, the punching sheet A3 of the manufactured motor stator core may have a certain degree of coaxiality deviation. Therefore, the motor stator core laminating and forming device further comprises a detection tool II for detecting the concentricity of the stamped steel A3. In this embodiment, innovatively adopt the wire-electrode cutting principle to realize detecting the axiality of motor stator core, need not complicated detection frock and check out test set, can conveniently detect the concentricity of motor stator core deep hole inner chamber, detect easy operation high-efficient, detect accurate stable.

As shown in fig. 10 and 11, the main structure of the detection tool ii is similar to that of the existing wire cutting equipment, and includes a detection rack 4, a detection positioning seat 5, a positioning seat rotating mechanism 6, an X-axis driving mechanism 7, a Y-axis driving mechanism 8, a discharge detection mechanism 9 and an alignment mechanism 10, wherein the detection rack 4 adopts a frame structure, and the bottom of the detection rack is provided with a supporting leg with adjustable height, so as to ensure the stability of the whole detection tool ii; the detection positioning seat 5 is rotatably arranged on a detection table 4-1 of the detection rack 4, and the positioning seat rotating mechanism 6 is in transmission connection with the detection positioning seat 5 and is used for driving the detection positioning seat 5 to rotate; the discharge detection mechanism 9 is installed on the detection rack 4 through an X-axis driving mechanism 7 and a Y-axis driving mechanism 8, the X-axis driving mechanism 7 and the Y-axis driving mechanism 8 respectively drive the discharge detection mechanism 9 to move in the X-axis direction and the Y-axis direction, and the alignment mechanism 10 is located on one side of the detection positioning seat 5 and used for aligning the verticality of the discharge detection mechanism 9. The discharge detection mechanism 9 comprises a take-up and pay-off mechanism 9-1, a vertical support frame 9-2, a horizontal lower support frame 9-3, a horizontal upper support frame 9-4, a tensioning mechanism 9-5, an upper movable pulley block 9-6, a U-axis adjusting mechanism 9-7, a V-axis adjusting mechanism 9-8 and a discharge wire 9-9, wherein the vertical support frame 9-2, the horizontal lower support frame 9-3 and the horizontal upper support frame 9-4 are connected to form an Contraband-shaped frame, the upper movable pulley block 9-6 is arranged on the horizontal upper support frame 9-4 through the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8, the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8 respectively drive the upper movable pulley block 9-6 to move in the directions of a U axis and a V axis, the horizontal lower support frame 9-3 is provided with a lower pulley 9-3-1, the take-up and pay-off mechanism 9-1 is arranged at the rear part of the Contraband-shaped frame, the discharge wire 9-9 is wound on the take-up and pay-off mechanism 9-1 and winds around the lower pulley 9-3-1, the upper movable pulley block 9-6 and the tensioning mechanism 9-5, and a vertical and tight discharge wire detection section is formed between the horizontal lower support 9-3 and the horizontal upper support 9-4; the detection positioning seat 5 is positioned between the horizontal lower support 9-3 and the horizontal upper support 9-4, the discharge wire detection section penetrates through a central hole of the detection positioning seat 5, and the detection positioning seat is used for detecting the laminating welding coaxiality of the punching sheet A3 through the discharge uniformity between the discharge wire detection section and the inner hole wall of the motor stator core on the detection positioning seat 5. The detection tool II of the embodiment skillfully utilizes the existing wire cutting electric spark discharge principle to detect the coaxiality of the motor stator core, and does not need complex detection tools and detection equipment.

Specifically, in this embodiment, as shown in fig. 11 and 12, the above-mentioned detection positioning seat 5 is a circular ring structure, and is mounted on the detection table 4-1 through a tapered roller bearing, a positioning portion 5-1 for positioning upper and lower flange end plates of a motor stator core is provided on an upper end face of the detection positioning seat 5, and a positioning seat outer ring gear 5-2 is provided on an outer periphery of the detection positioning seat 5. The positioning seat rotating mechanism 6 comprises a positioning seat rotating motor 6-1 and a positioning seat rotating transmission gear 6-2, the positioning seat rotating motor 6-1 can adopt a stepping motor and is in transmission connection with the positioning seat rotating transmission gear 6-2, the positioning seat rotating transmission gear 6-2 is meshed with the positioning seat outer gear ring 5-2, and the positioning seat rotating motor 6-1 can drive the detection positioning seat 5 to rotate when working so as to change different detection positions. The alignment mechanism 10 comprises an alignment block 10-1, an alignment block adjusting hand wheel 10-2, an alignment block adjusting screw rod 10-3 and an alignment block adjusting guide rod 10-4, wherein the tail part of the alignment block 10-1 is provided with an extension bracket, so that the alignment block 10-1 can move to the inner side of the detection positioning seat 5, the alignment block 10-1 is slidably mounted on the alignment block adjusting guide rod 10-4 through the extension bracket, the alignment block adjusting guide rod 10-4 can be fixed on a mounting plate, the alignment block adjusting screw rod 10-3 is parallel to the alignment block adjusting guide rod 10-4, the extension bracket is connected with the alignment block adjusting screw rod 10-3 through a screw rod nut, the alignment block adjusting hand wheel 10-2 is arranged at one end of the alignment block adjusting screw rod 10-3, the alignment block adjusting screw rod 10-3 can be driven to rotate through the alignment block adjusting hand wheel 10-2, thereby driving the aligning block 10-1 to move. The alignment block 10-1 is provided with two vertical reference surfaces, which is the same as the alignment principle of the linear cutting equipment, and the verticality between the discharge wire 9-9 and the detection positioning seat 5 is adjusted by adjusting the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8 and observing whether the discharge wire 9-9 and the reference surfaces of the alignment block 10-1 are uniformly discharged or not.

As shown in FIG. 11, the X-axis driving mechanism 7 includes an X-axis driving motor 7-1, an X-axis driving lead screw 7-2, an X-axis guide rail 7-3 and an X-axis sliding base 7-4, the X-axis sliding base 7-4 is horizontally slidably mounted on the detection rack 4 through the X-axis guide rail 7-3, the X-axis driving motor 7-1 is in transmission connection with the X-axis sliding base 7-4 through the X-axis driving lead screw 7-2, and the X-axis sliding base 7-4 is driven to move through a ball screw mechanism. The Y-axis driving mechanism 8 comprises a Y-axis driving motor 8-1, a Y-axis driving lead screw 8-2, a Y-axis guide rail 8-3 and a Y-axis sliding seat 8-4, the Y-axis sliding seat 8-4 is horizontally and slidably mounted on the X-axis sliding seat 7-4 through the Y-axis guide rail 8-3, the Y-axis driving motor 8-1 is in transmission connection with the Y-axis sliding seat 8-4 through the Y-axis driving lead screw 8-2, and the Y-axis sliding seat 8-4 is driven to move through a ball lead screw mechanism. The discharge detection mechanism 9 is mounted on the Y-axis slide carriage 8-4. The X-axis drive motor 7-1 and the Y-axis drive motor 8-1 are preferably stepping motors.

As shown in fig. 13 and 14, in the discharge detecting mechanism 9, the take-up and pay-off mechanism 9-1 includes a take-up and pay-off motor 9-1-1, a wire winding roller 9-1-2, a deceleration transmission gear set 9-1-3, a wire winding carriage 9-1-4, a wire winding driving screw 9-1-5, a carriage guide rod 9-1-6 and a transmission shaft 9-1-7, the wire winding carriage 9-1-4 is horizontally slidably mounted on a Y-axis slide carriage 8-4 through the carriage guide rod 9-1-6, the wire winding driving screw 9-1-5 is rotatably mounted on the lower portion of the wire winding carriage 9-1-4 and is engaged with a fixed screw nut fixed on the Y-axis slide carriage 8-4, the wire winding roller 9-1-2 is rotatably arranged at the upper part of a wire winding sliding frame 9-1-4, the speed reduction transmission gear set 9-1-3 comprises a driving gear 9-1-3a, a primary driven gear 9-1-3b, a secondary driven gear 9-1-3c and a roller gear 9-1-3d, the wire winding and unwinding motor 9-1-1 is arranged at one side of the wire winding sliding frame 9-1-4, a transmission shaft 9-1-7 is coaxially arranged at the inner side of the wire winding roller 9-1-2 in a penetrating manner, one end of the transmission shaft 9-1-7 is in transmission connection with a motor shaft of the wire winding and unwinding motor 9-1-1, the driving gear 9-1-3a is arranged at the other end, and the primary driven gear 9-1-3b and the secondary driven gear 9-1-3c are respectively fixed on the wire winding driving wire One end of the lever 9-1-5, the first-stage driven gear 9-1-3b and the second-stage driven gear 9-1-3c can adopt a duplicate gear structure, a driving gear 9-1-3a is meshed with the first-stage driven gear 9-1-3b, the second-stage driven gear 9-1-3c is meshed with the roller gear 9-1-3d, the roller gear 9-1-3d is fixed at one end of the wire winding roller 9-1-2, and the discharge wire 9-9 is wound on the wire winding roller 9-1-2. The wire winding and unwinding motor 9-1-1 preferably adopts a stepping motor, the wire winding and unwinding motor 9-1-1 drives a driving gear 9-1-3a to rotate through a transmission shaft 9-1-7, the driving gear 9-1-3a drives a first-stage driven gear 9-1-3b to rotate, the first-stage driven gear 9-1-3b synchronously drives a second-stage driven gear 9-1-3c and a wire winding driving screw 9-1-5 to rotate, so that the wire winding sliding frame 9-1-4 integrally moves on a sliding frame guide rod 9-1-6, and the forward and reverse movement of the wire winding and unwinding motor 9-1-1 is controlled through a limit switch, so that the wire winding sliding frame 9-1-4 reciprocates; the secondary driven gear 9-1-3c drives the roller gear 9-1-3d to rotate, and further drives the wire winding roller 9-1-2 to rotate, and drives the discharge wire 9-9 on the wire winding roller to move. The Contraband-shaped frame is fixed on the Y-axis sliding seat 8-4, the discharge wire 9-9 is led out from the wire winding roller 9-1-2 and wound on the lower pulley 9-3-1, the upper movable pulley block 9-6 and the tensioning mechanism 9-5 through the guide pulley, and the tensioning mechanism 9-5 is used for keeping the discharge wire 9-9 in a stretched state. The U-axis adjusting mechanism 9-7 comprises a U-axis adjusting motor 9-7-1 and a fixed mounting frame 9-7-2, the V-axis adjusting mechanism 9-8 comprises a V-axis adjusting motor 9-8-1 and a movable mounting frame 9-8-2, the fixed mounting frame 9-7-2 is fixed on a horizontal upper support 9-4, the movable mounting frame 9-8-2 is slidably mounted on the fixed mounting frame 9-7-2 along the U-axis direction, and the U-axis adjusting motor 9-7-1 is fixed on one side of the fixed mounting frame 9-7-2 and is in transmission connection with the movable mounting frame 9-8-2 through a ball screw transmission mechanism; the upper movable pulley block 9-6 is slidably mounted on the movable mounting frame 9-8-2 along the V-axis direction, and the V-axis adjusting motor 9-8-1 is fixed on one side of the movable mounting frame 9-8-2 and is in transmission connection with the upper movable pulley block 9-6 through a ball screw transmission mechanism. The U-axis adjusting motor 9-7-1 and the V-axis adjusting motor 9-8-1 are both special motors for the existing wire cutting, a U-axis adjusting knob 9-7-1a is arranged on the U-axis adjusting motor 9-7-1, and a V-axis adjusting knob 9-8-1a is arranged on the V-axis adjusting motor 9-8-1, so that the rotation of an output shaft can be manually controlled or electrically controlled, and an operation signal can be output.

The motor stator core laminating and forming method further comprises a step S3 of detecting a motor stator core product through a detection tool II in the motor stator core laminating and forming device, wherein the detection can be directly carried out by adopting the existing linear cutting equipment, and only the detection positioning seat 5 capable of positioning the product to be detected 11 is needed. With reference to fig. 10 to 15, the specific detection method is as follows:

s3-1, alignment and zero correction: moving an alignment block 10-1 in an alignment mechanism 10 to the inner side of a center hole of a detection positioning seat 5, driving a discharge wire detection section in a discharge wire 9-9 to be close to the alignment block 10-1 through an X-axis driving mechanism 7 and a Y-axis driving mechanism 8, then adjusting the taper of the discharge wire detection section through a U-axis adjusting mechanism 9-7 and a V-axis adjusting mechanism 9-8 respectively, observing the discharge conditions of two reference surfaces of the discharge wire detection section and the alignment block 10-1, finishing alignment when the discharge wire detection section and the alignment block 10-1 are uniformly discharged, and performing zero calibration on coordinates of the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8. The discharge wire detection section is in a vertical state at the moment.

S3-2, product installation: and (3) moving an alignment block 10-1 in the alignment mechanism 10, disconnecting the discharge wire 9-9, positioning and mounting a product 11 to be detected on the detection positioning seat 5, penetrating the discharge wire 9-9 through an inner hole of a motor stator core product, and then connecting the discharge wires 9-9 to form a loop and tensioning.

S3-3, discharge detection: the discharge wire 9-9 is connected with the negative electrode of the power supply, and the product to be detected 11 is connected with the positive electrode of the power supply; the discharge wire detection section in the discharge wires 9-9 is driven to be close to the inner hole wall of the motor stator core product by the X-axis driving mechanism 7 and the Y-axis driving mechanism 8, a power supply is switched on, electric spark discharge is generated between the discharge wire detection section and the inner hole wall of the motor stator core product (the pulse discharge principle of the discharge wires 9-9 is the same as that of linear cutting equipment, and the description is not repeated), whether the electric spark discharge on the inner hole wall is uniform or not is observed, the electric spark discharge on the inner hole wall reaches a uniform state (the X-axis and Y-axis positions of the discharge wire detection section can be finely adjusted again when necessary) by manually adjusting the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8, the electric spark discharge system records the movement displacement of the U-axis adjusting mechanism 9-7 and the V-axis adjusting mechanism 9-8, the coaxiality of the punching sheets A3 of the motor stator core product is reflected through the moving displacement of the U axis and the V axis. The moving coordinates of the U axis and the V axis can be obtained from an interactive touch screen of an electric spark discharge system (a linear cutting control system), and if the moving displacement of the U axis and the V axis exceeds a set range, the coaxiality is judged to be out of tolerance, and the product is unqualified. Or the moving coordinates of the U axis and the V axis can be converted into the inclination of the discharge wire detection section by the electric spark discharge system, and the coaxiality of the punching sheet A3 can be reflected by the inclination of the discharge wire detection section.

S3-4, the discharge wire detection section is driven to leave the inner hole wall of the motor stator core product through the X-axis driving mechanism 7 and the Y-axis driving mechanism 8, then the detection positioning seat 5 is driven to rotate through the positioning seat rotating mechanism 6 to switch to the next detection position, and the step S3-3 is repeated to finish the detection of the coaxiality of the punching sheet A3 of the motor stator core product. In the embodiment, a plurality of detection positions can be selected on the motor stator core, and the accuracy and reliability of detection data are ensured.

The invention relates to a motor stator core laminating and forming device and a method, which utilize a tooth space stuff to carry out preliminary positioning on punching sheets and upper and lower tooth pressing plates, facilitate the rapid assembly of a motor stator core, utilize a stuff lower wedging mechanism and a stuff upper wedging mechanism to wedge the tooth space stuff and a tooth space, ensure the position precision of tooth spaces on each punching sheet, and simultaneously utilize the linkage action of a tensioning and centering mechanism, sequentially completing wedging positioning of tooth grooves of the punching sheets, tensioning and centering of inner walls of the punching sheets and pressing and pressure maintaining of a motor stator core in the process that a central pull rod of the punching sheet is pulled down and moved, can directly weld fixedly on the pressure-superposed welding tool, reduce the motor stator pressure-superposed assembly steps and the multistation circulation process, make the motor stator pressure-superposed welding operation more convenient, improve the preparation efficiency of motor stator, improve motor stator's preparation precision greatly, improve the product percent of pass. In addition, the motor stator iron cores which are laminated together can be horizontally turned and axially rotated by matching with the turning mechanism so as to change different welding positions, and the welding operation is simpler and more convenient. In addition, the invention also innovatively adopts the linear cutting principle to realize the detection of the coaxiality of the motor stator core, does not need complex detection tools and detection equipment, can conveniently detect the concentricity of the deep hole inner cavity of the motor stator core, and has simple and efficient detection operation and accurate and stable detection.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides a motor stator iron core folds and presses forming device, includes folds and presses welding frock (I), its characterized in that: fold and press welding frock (I) including fold and press frame (1) and install location on folding and press frame (1) and fold and press mechanism (2), location fold and press mechanism (2) including fold and press driver (2-1), assembly base (2-2), tooth's socket stuff (2-5), stuff down wedge tight mechanism (2-3), stuff up wedge tight mechanism (2-6) and tight centering mechanism (2-4) that rises, wherein:

the assembly base (2-2) is arranged on the laminated frame (1), and the upper part of the assembly base (2-2) is provided with an annular positioning boss (2-2-1) for positioning a lower flange end plate (A1) of the motor stator core;

the lower wedging mechanism (2-3) of the tampon comprises a lower floating support plate (2-3-6) sleeved outside the positioning boss (2-2-1) and at least two lower push rods (2-3-5) arranged below the lower floating support plate (2-3-6), the lower push rods (2-3-5) are uniformly distributed in the circumferential direction of the positioning boss (2-2-1), each lower push rod (2-3-5) is arranged at the lower part of the positioning boss (2-2-1) in a sliding manner along the radial direction, the lower floating support plate (2-3-6) is respectively in transmission connection with each lower push rod (2-3-5) through a first elastic conversion mechanism, and is used for converting the pressing action of the lower flange end plate (A1) on the lower floating support plate (2-3-6) into the pressing action of each lower push rod (2-3-6) 3-5) radial inward thrust;

the upper wedge-caulking mechanism (2-6) of the tampon comprises a first upper pressing plate (2-6-1), a second upper pressing plate (2-6-2) and upper push rods (2-6-4) arranged on the upper portion of the first upper pressing plate (2-6-1) in a sliding mode along the radial direction, a positioning table capable of being matched with an upper flange end plate (A5) of a motor stator core in a positioning mode is arranged below the first upper pressing plate (2-6-1), the number of the upper push rods (2-6-4) is equal to that of the lower push rods (2-3-5), the upper push rods and the lower push rods are in corresponding position, the second upper pressing plate (2-6-2) is arranged above the first upper pressing plate (2-6-1) in a sliding mode, the second upper pressing plate (2-6-2) and the upper push rods (2-6-4) are respectively rotated through second elasticity The switching mechanism is in transmission connection and is used for converting the pressing action of the second upper pressing plate (2-6-2) into the radial inward thrust action of each upper push rod (2-6-4) and the pressing action of the first upper pressing plate (2-6-1);

the tooth groove plugging strip (2-5) has a cross section shape capable of being wedged tightly with a tooth groove (A8) on a punching sheet (A3), the tooth groove plugging strip (2-5) is arranged in the tooth groove (A8) in a penetrating mode, the upper end and the lower end of the tooth groove plugging strip (2-5) are matched with a corresponding lower push rod (2-3-5) and an upper push rod (2-6-4) respectively, and the tooth groove plugging strip (2-5) and the tooth groove (A8) are wedged tightly under the action of radial inward thrust of the lower push rod (2-3-5) and the upper push rod (2-6-4);

the tensioning and centering mechanism (2-4) comprises a central pull rod (2-4-1), an outer sleeve (2-4-2) and a tensioning plate (2-4-3), the upper end of the central pull rod (2-4-1) is provided with a pressing plate (2-4-1 a) which can be in pressing fit with the second upper pressing plate (2-6-2), the central pull rod (2-4-1) passes through pull rod holes (2-6-8) of the first upper pressing plate (2-6-1) and the second upper pressing plate (2-6-2) and then is detachably connected with a laminating pressing driver (2-1) positioned below the assembly base (2-2), the outer sleeve (2-4-2) is sleeved on the outer side of the central pull rod (2-4-1), the central pull rod (2-4-1) and the outer sleeve (2-4-2) are connected with a tensioning plate (2-4-3) through a support rod mechanism, the tensioning plate (2-4-3) is driven to contract or expand through the support rod mechanism when the central pull rod (2-4-1) and the outer sleeve (2-4-2) move axially relatively, at least two tensioning plates (2-4-3) are uniformly arranged along the circumferential direction, the lower end of the outer sleeve (2-4-2) can abut against the assembling base (2-2) in the pulling-down process of the central pull rod (2-4-1) so as to tension an inner hole of the punching sheet (A3) through the tensioning plate (2-4-3) when the central pull rod (2-4-1) is pulled downwards by the laminating pressing driver (2-1), the motor stator iron cores which are stacked together are laminated and compressed through a wedge mechanism (2-6) on the plug strip;

the device is characterized by further comprising a detection tool (II), wherein the detection tool (II) comprises a detection rack (4), a detection positioning seat (5), a positioning seat rotating mechanism (6), an X-axis driving mechanism (7), a Y-axis driving mechanism (8), a discharge detection mechanism (9) and an alignment mechanism (10), the detection positioning seat (5) is rotatably arranged on a detection table (4-1) of the detection rack (4), and the positioning seat rotating mechanism (6) is in transmission connection with the detection positioning seat (5) and is used for driving the detection positioning seat (5) to rotate; the discharge detection mechanism (9) is arranged on the detection rack (4) through an X-axis driving mechanism (7) and a Y-axis driving mechanism (8), the X-axis driving mechanism (7) and the Y-axis driving mechanism (8) respectively drive the discharge detection mechanism (9) to move in the X-axis direction and the Y-axis direction, and the alignment mechanism (10) is positioned on one side of the detection positioning seat (5) and is used for aligning the verticality of the discharge detection mechanism (9);

the discharge detection mechanism (9) comprises a take-up and pay-off mechanism (9-1), a vertical support frame (9-2), a horizontal lower support frame (9-3), a horizontal upper support frame (9-4), a tensioning mechanism (9-5), an upper moving pulley block (9-6), a U-shaft adjusting mechanism (9-7), a V-shaft adjusting mechanism (9-8) and a discharge wire (9-9), wherein the vertical support frame (9-2), the horizontal lower support frame (9-3) and the horizontal upper support frame (9-4) are connected to form an Contraband-shaped frame, the upper moving pulley block (9-6) is installed on the horizontal upper support frame (9-4) through the U-shaft adjusting mechanism (9-7) and the V-shaft adjusting mechanism (9-8), and the U-shaft adjusting mechanism (9-7) and the V-shaft adjusting mechanism (9-8) respectively drive the upper moving pulley block (9-6) ) The discharge wire detection device moves in the directions of a U shaft and a V shaft, a lower pulley (9-3-1) is arranged on the horizontal lower support (9-3), the take-up and pay-off mechanism (9-1) is arranged at the rear part of the Contraband-shaped frame, the discharge wire (9-9) is wound on the take-up and pay-off mechanism (9-1) and wound by the lower pulley (9-3-1), the upper movable pulley block (9-6) and the tensioning mechanism (9-5), and a vertical and tight discharge wire detection section is formed between the horizontal lower support (9-3) and the horizontal upper support (9-4); the detection positioning seat (5) is positioned between the horizontal lower support (9-3) and the horizontal upper support (9-4), and the discharge wire detection section penetrates through a center hole of the detection positioning seat (5) and is used for detecting the lamination welding coaxiality of the punching sheet (A3) through the discharge uniformity between the discharge wire detection section and the inner hole wall of the motor stator core on the detection positioning seat (5).

2. A motor stator core lamination molding apparatus as claimed in claim 1, wherein: the positioning and laminating mechanism (2) is arranged on the laminating machine frame (1) through a turnover mechanism (3), the turnover mechanism (3) comprises a turnover seat (3-1), a turnover driving mechanism (3-2) and a rotary driving mechanism (3-3), the turnover seat (3-1) is rotatably arranged on the laminating machine frame (1) through a turnover rotating shaft (3-1 a), and the turnover driving mechanism (3-2) is arranged on the laminating machine frame (1) and used for controlling the horizontal turnover movement of the turnover seat (3-1); the assembling base (2-2) is rotatably arranged on the overturning seat (3-1) through a rotary supporting platform (3-3-4), and the rotary driving mechanism (3-3) is arranged on the overturning seat (3-1) and used for controlling the axial rotary motion of the assembling base (2-2).

3. A motor stator core lamination molding apparatus as claimed in claim 2, wherein: the overturning driving mechanism (3-2) comprises an overturning driver (3-2-1), a sliding seat (3-2-2), a guide rod (3-2-3), a rack (3-2-4) and an overturning gear (3-2-5), the sliding seat (3-2-2) is slidably mounted on the laminating machine frame (1) through the guide rod (3-2-3), the rack (3-2-4) is fixed on the sliding seat (3-2-2), the overturning gear (3-2-5) is fixed on an overturning rotating shaft (3-1 a), the rack (3-2-4) is meshed with the overturning gear (3-2-5), and the overturning driver (3-2-1) is mounted on the laminating machine frame (1) and the sliding seat (3-2-5) 2) The rack (3-2-4) is driven to move linearly by the sliding seat (3-2-2); the rotary driving mechanism (3-3) comprises a rotary driver (3-3-1), a transmission gear (3-3-2) and a rotary external gear ring (3-3-3), the rotary external gear ring (3-3-3) and the rotary support table (3-3-4) are coaxially fixed at the lower part of the assembly base (2-2), the rotary supporting platform (3-3-4) is arranged between the rotary outer gear ring (3-3-3) and the overturning seat (3-1), the rotary driver (3-3-1) is arranged on the overturning seat (3-1), and the output shaft of the rotary driver (3-3-1) is in transmission connection with the rotary external gear ring (3-3-3) through a transmission gear (3-3-2).

4. A motor stator core lamination molding apparatus as claimed in claim 1, wherein: the first elastic conversion mechanism comprises a lower guide rod (2-3-1), a lower sliding block (2-3-2), a lower pressure spring (2-3-3) and a lower inclined push rod (2-3-4), the lower guide rod (2-3-1) is vertically installed on an assembly base (2-2), the lower sliding block (2-3-2) and the lower pressure spring (2-3-3) are sequentially sleeved on the lower guide rod (2-3-1), a lower floating support plate (2-3-6) penetrates through the lower guide rod (2-3-1) and is located above the lower pressure spring (2-3-3), and the lower sliding block (2-3-2) and the corresponding lower push rod (2-3-5) are externally arranged through the lower inclined push rod (2-3-4) The lower inclined push rod (2-3-4) is respectively hinged with the lower sliding block (2-3-2) and the lower push rod (2-3-5);

the second elastic conversion mechanism comprises an upper guide rod (2-6-3), an upper inclined push rod (2-6-5), an upper sliding block (2-6-6) and an upper pressure spring (2-6-7), the upper guide rod (2-6-3) is vertically arranged on the first upper pressure plate (2-6-1), the upper sliding block (2-6-6) and the upper pressure spring (2-6-7) are sequentially sleeved on the upper guide rod (2-6-3), the second upper pressure plate (2-6-2) is arranged on the upper guide rod (2-6-3) in a penetrating manner and is positioned above the upper pressure spring (2-6-7), and the upper sliding block (2-6-6) is connected with the corresponding upper push rod (2-6) through the upper inclined push rod (2-6-5) 4) The outer ends of the upper inclined push rods (2-6-5) are connected, and the upper inclined push rods (2-6-6) are respectively hinged with the upper sliding blocks (2-6-4).

5. A motor stator core lamination molding apparatus as claimed in claim 1, wherein: the tensioning device is characterized in that the stay bar mechanism comprises a tensioning stay bar (2-4-4) and an inclined stay bar (2-4-5), the inner side of the tensioning plate (2-4-3) is connected with the outer sleeve (2-4-2) through the tensioning stay bar (2-4-4) to form a parallelogram mechanism, a vertical opening is formed in the side wall of the outer sleeve (2-4-2), a support arm extending out of the vertical opening is arranged on the central pull bar (2-4-1), one end of the inclined stay bar (2-4-5) is hinged to the support arm, and the other end of the inclined stay bar is hinged to the middle of the tensioning stay bar (2-4-4).

6. The laminating and molding device for the stator core of the motor according to claim 1, wherein:

the winding and unwinding mechanism (9-1) comprises a winding and unwinding motor (9-1-1), a wire winding roller (9-1-2), a speed reduction transmission gear set (9-1-3), a wire winding sliding frame (9-1-4), a wire winding driving lead screw (9-1-5), a sliding frame guide rod (9-1-6) and a transmission shaft (9-1-7), wherein the wire winding sliding frame (9-1-4) is horizontally installed in a sliding mode through the sliding frame guide rod (9-1-6), the wire winding driving lead screw (9-1-5) is rotatably installed on the lower portion of the wire winding sliding frame (9-1-4) and matched with a fixed lead screw nut, and the wire winding roller (9-1-2) is rotatably installed on the upper portion of the wire winding sliding frame (9-1-4), the speed reduction drive gear set (9-1-3) comprises a drive gear (9-1-3 a), a first-stage driven gear (9-1-3 b), a second-stage driven gear (9-1-3 c) and a roller gear (9-1-3 d), the take-up and pay-off motor (9-1-1) is installed on one side of the wire winding sliding frame (9-1-4), the transmission shaft (9-1-7) is coaxially arranged on the inner side of the wire winding roller (9-1-2) in a penetrating mode, one end of the transmission shaft (9-1-7) is in transmission connection with a motor shaft of the take-up and pay-off motor (9-1-1), the drive gear (9-1-3 a) is arranged at the other end of the transmission shaft, and the first-stage driven gear (9-1-3 b) and the second-stage driven gear (9-1-3 c) are respectively fixed to the take-up and pay-off motor (9-1-3 a) One end of a wire driving screw rod (9-1-5), wherein a driving gear (9-1-3 a) is meshed with a primary driven gear (9-1-3 b), a secondary driven gear (9-1-3 c) is meshed with a roller gear (9-1-3 d), the roller gear (9-1-3 d) is fixed at one end of a wire winding roller (9-1-2), and the discharge wire (9-9) is wound on the wire winding roller (9-1-2);

the U-axis adjusting mechanism (9-7) comprises a U-axis adjusting motor (9-7-1) and a fixed mounting rack (9-7-2), the V-axis adjusting mechanism (9-8) comprises a V-axis adjusting motor (9-8-1) and a movable mounting rack (9-8-2), the fixed mounting rack (9-7-2) is fixed on the horizontal upper bracket (9-4), the movable mounting rack (9-8-2) is slidably mounted on the fixed mounting rack (9-7-2) along the direction of the U axis, the U-axis adjusting motor (9-7-1) is fixed on one side of the fixed mounting frame (9-7-2) and is in transmission connection with the movable mounting frame (9-8-2) through a ball screw transmission mechanism; the upper movable pulley block (9-6) is slidably mounted on the movable mounting frame (9-8-2) along the V-axis direction, and the V-axis adjusting motor (9-8-1) is fixed on one side of the movable mounting frame (9-8-2) and is in transmission connection with the upper movable pulley block (9-6) through a ball screw transmission mechanism; the U-axis adjusting motor (9-7-1) is provided with a U-axis adjusting knob (9-7-1 a), and the V-axis adjusting motor (9-8-1) is provided with a V-axis adjusting knob (9-8-1 a).

7. A motor stator core laminating forming method is characterized in that: the laminating and molding device for the stator core of the motor according to any one of claims 1 to 5, comprising the steps of:

s1, laminating: the method comprises the steps that a lower flange end plate (A1) is positioned and installed on a positioning boss (2-2-1) of an assembly base (2-2), a lower tooth pressing plate (A2) is placed on a lower flange end plate (A1), the position of the lower tooth pressing plate (A2) on the lower flange end plate (A1) is adjusted, then a tooth socket gib (2-5) is inserted into a corresponding tooth socket (A8) of the lower tooth pressing plate (A2), and the end portion of a corresponding lower push rod (2-3-5) abuts against the lower end of the tooth socket gib (2-5); by utilizing the primary positioning function of the tooth socket chock strips (2-5), a set number of punching sheets (A3) are sequentially stacked on the lower tooth pressing plate (A2), and then the upper tooth pressing plate (A4) is stacked on the punching sheet (A3) at the uppermost part; the lower part of the welding rib plate (A6) is positioned and installed on the lower flange end plate (A1) by using a positioning pin (A7), and then the upper flange end plate (A5) is positioned and installed on the upper tooth pressing plate (A4) by using a positioning pin (A7); then, mounting the assembly of the tensioning and centering mechanism (2-4) and the upper wedging mechanism (2-6) of the stuff from the upper part, so that the tensioning and centering mechanism (2-4) is positioned at the inner side of the punching sheet (A3), the upper wedging mechanism (2-6) of the stuff is positioned at the upper part of the upper flange end plate (A5), and adjusting the position of the upper wedging mechanism (2-6) of the stuff so that the end part of the corresponding upper push rod (2-6-4) is abutted against the upper end of the tooth socket stuff (2-5); the lower end of a central pull rod (2-4-1) is connected with a laminating pressing driver (2-1), the central pull rod (2-4-1) is pulled down by the laminating pressing driver (2-1), the central pull rod (2-4-1) moves downwards, downward pressure is applied to an upper wedge mechanism (2-6) of the plug strip and a lower wedge mechanism (2-3) of the plug strip through a pressing plate (2-4-1 a), and the corresponding tooth socket plug strip (2-5) moves towards the center and is wedged with a tooth socket (A8) to ensure the position accuracy of the tooth socket (A8) on each punching sheet (A3); the laminating and pressing driver (2-1) continues to drive the central pull rod (2-4-1) to press downwards, the lower part of the outer sleeve (2-4-2) is limited by the assembling base (2-2), and then each tensioning plate (2-4-3) expands outwards to ensure the coaxiality of each punching sheet (A3), and the stacked motor stator iron cores are further laminated and pressed tightly;

s2, welding: the laminated motor stator iron cores are subjected to pressure maintaining by using a laminated pressing driver (2-1), and the motor stator iron cores are welded by using welding equipment in a pressure maintaining state to obtain a motor stator iron core product;

the method further comprises a step S3 of detecting the motor stator core product through a detection tool (II) in the motor stator core laminating and forming device, and the specific detection method is as follows:

s3-1, alignment and zero correction: moving an alignment block (10-1) in an alignment mechanism (10) to the inner side of a center hole of a detection positioning seat (5), driving a discharge wire detection section in a discharge wire (9-9) to be close to the alignment block (10-1) through an X-axis driving mechanism (7) and a Y-axis driving mechanism (8), then adjusting the taper of the discharge wire detection section through a U-axis adjusting mechanism (9-7) and a V-axis adjusting mechanism (9-8), observing the discharge conditions of two reference surfaces of the discharge wire detection section and the alignment block (10-1), finishing alignment when the discharge wire detection section and the alignment block (10-1) are uniformly discharged, and correcting the coordinates of the U-axis adjusting mechanism (9-7) and the V-axis adjusting mechanism (9-8);

s3-2, product installation: removing an alignment block (10-1) in an alignment mechanism (10), breaking a discharge wire (9-9), positioning and mounting a product to be detected (11) on a detection positioning seat (5), penetrating the discharge wire (9-9) through an inner hole of a motor stator core product, and then connecting the discharge wire (9-9) to form a loop and tensioning the loop;

s3-3, discharge detection: the discharge wire (9-9) is connected with the cathode of a power supply, the product (11) to be tested is connected with the anode of the power supply, the discharge wire detection section in the discharge wire (9-9) is driven to be close to the inner hole wall of the motor stator core product by the X-axis driving mechanism (7) and the Y-axis driving mechanism (8), the power supply is switched on, electric spark discharge is generated between the discharge wire detection section and the inner hole wall of the motor stator core product, whether the electric spark discharge on the inner hole wall is uniform or not is observed, the electric spark discharge on the inner hole wall reaches a uniform state by manually adjusting the U-axis adjusting mechanism (9-7) and the V-axis adjusting mechanism (9-8), the electric spark discharge system records the movement displacement of the U-axis adjusting mechanism (9-7) and the V-axis adjusting mechanism (9-8), reflecting the coaxiality of the punching sheets (A3) of the motor stator core product through the moving displacement of the U axis and the V axis;

s3-4, driving the discharge wire detection section to leave the inner hole wall of the motor stator core product through the X-axis driving mechanism (7) and the Y-axis driving mechanism (8), then driving the detection positioning seat (5) to rotate through the positioning seat rotating mechanism (6) to switch to the next detection position, and repeating the step S3-3 to finish the coaxiality detection of the punching sheet (A3) of the motor stator core product.

8. The method of claim 7, wherein: in step S2, the positioning and laminating mechanism (2) is mounted on the laminating frame (1) through the turnover mechanism (3), the turnover mechanism (3) can drive the laminating positioning mechanism (2) to horizontally turn over and axially rotate, and in the welding process, the turnover mechanism (3) drives the laminated motor stator core to horizontally turn over and axially rotate to change different welding positions.